Technical Guidance Manual for Developing Total Maximum Daily Loads
Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 240 |
Release | : 1997 |
Genre | : Biochemical oxygen demand |
ISBN | : 1428906096 |
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Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 240 |
Release | : 1997 |
Genre | : Biochemical oxygen demand |
ISBN | : 1428906096 |
Author | : |
Publisher | : |
Total Pages | : 378 |
Release | : 2002 |
Genre | : Sewage |
ISBN | : |
"This manual contains overview information on treatment technologies, installation practices, and past performance."--Introduction.
Author | : American Society of Civil Engineers. TMDL Analysis and Modeling Task Committee |
Publisher | : Asce American Society of Civil Engineers Ewri |
Total Pages | : 0 |
Release | : 2017 |
Genre | : Water |
ISBN | : 9780784414712 |
This report reviews more than 35 TMDL models and procedures for estimating the maximum amount of a pollutant that a water body can receive and still meet applicable water quality standards.
Author | : Washington (State). Department of Ecology. Watershed Assessments Section. TMDL Workgroup |
Publisher | : |
Total Pages | : 30 |
Release | : 1996 |
Genre | : Water |
ISBN | : |
Author | : United States. Environmental Protection Agency. Office of Water |
Publisher | : |
Total Pages | : 344 |
Release | : 1991 |
Genre | : Toxicology |
ISBN | : |
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 242 |
Release | : 2001-08-24 |
Genre | : Political Science |
ISBN | : 0309075793 |
Over the last 30 years, water quality management in the United States has been driven by the control of point sources of pollution and the use of effluent-based water quality standards. Under this paradigm, the quality of the nation's lakes, rivers, reservoirs, groundwater, and coastal waters has generally improved as wastewater treatment plants and industrial dischargers (point sources) have responded to regulations promulgated under authority of the 1972 Clean Water Act. These regulations have required dischargers to comply with effluent-based standards for criteria pollutants, as specified in National Pollutant Discharge Elimination System (NPDES) permits issued by the states and approved by the U.S. Environmental Protection Agency (EPA). Although successful, the NPDES program has not achieved the nation's water quality goals of "fishable and swimmable" waters largely because discharges from other unregulated nonpoint sources of pollution have not been as successfully controlled. Today, pollutants such as nutrients and sediment, which are often associated with nonpoint sources and were not considered criteria pollutants in the Clean Water Act, are jeopardizing water quality, as are habitat destruction, changes in flow regimes, and introduction of exotic species. This array of challenges has shifted the focus of water quality management from effluent-based to ambient- based water quality standards. Given the most recent lists of impaired waters submitted to EPA, there are about 21,000 polluted river segments, lakes, and estuaries making up over 300,000 river and shore miles and 5 million lake acres. The number of TMDLs required for these impaired waters is greater than 40,000. Under the 1992 EPA guidance or the terms of lawsuit settlements, most states are required to meet an 8- to 13-year deadline for completion of TMDLs. Budget requirements for the program are staggering as well, with most states claiming that they do not have the personnel and financial resources necessary to assess the condition of their waters, to list waters on 303d, and to develop TMDLs. A March 2000 report of the General Accounting Office (GAO) highlighted the pervasive lack of data at the state level available to set water quality standards, to determine what waters are impaired, and to develop TMDLs. This report represents the consensus opinion of the eight-member NRC committee assembled to complete this task. The committee met three times during a three-month period and heard the testimony of over 40 interested organizations and stakeholder groups. The NRC committee feels that the data and science have progressed sufficiently over the past 35 years to support the nation's return to ambient-based water quality management. Given reasonable expectations for data availability and the inevitable limits on our conceptual understanding of complex systems, statements about the science behind water quality management must be made with acknowledgment of uncertainties. This report explains that there are creative ways to accommodate this uncertainty while moving forward in addressing the nation's water quality challenges.
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 611 |
Release | : 2009-03-17 |
Genre | : Nature |
ISBN | : 0309125391 |
The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.
Author | : United States. Congress. House. Committee on Agriculture. Subcommittee on Department Operations, Oversight, Nutrition, and Forestry |
Publisher | : |
Total Pages | : 304 |
Release | : 2000 |
Genre | : Agricultural pollution |
ISBN | : |